Ji Chang Wook and YoonA's chemistry was incredibly great in the drama 'The K2' that it led to suspicions about their relationship. 

SEE ALSO: Krystal's past letter to late f(x) member Sulli goes viral

In an interview with dongA on December 1, Ji Chang Wook shared thoughts about the speculations, and said, "The dating rumors involving YoonA are not true.

I just worked hard and, again, a lot of people came to misunderstand this time. So I thought, 'Again?' and just laughed. I've also talked to YoonA about these rumors and we just laughed it off.

"I always try to be very considerate of the actress. I think good acting results when working together in a comfortable environment. And that also helps to increase the viewers' focus but that tends to lead to misunderstandings. I think that's what happened again this time. There isn't anything special between YoonA and me. It'll be perfect to describe us as close oppa-dongsaeng."